Building Solutions | DuPont™ Flashing Tape

DuPont Flashing Products Help Keep Water Out, Walls Dry

DuPont offers a range of advanced flashing products to protect buildings’ vulnerable points.


Tyvek® FlexWrap NF & Flashing Tape

Flashing products protect walls by helping to keep water out, reducing the risk of potentially costly water damage and mold. DuPont Flashing Systems are uniquely engineered to protect vulnerable corners of windowsills, doors, and penetrations, where water is most likely to find its way in.


Features & benefits

Feature Benefit
Butyl Adhesive, compatible with most sealants and adhesives*
  • Low temperature application
  • FlexWrap NF one piece corner without fasteners
  • Re-positioning and adhesion improves over time
  • Available in 101, 152, 252mm widths to match wall thickness and application
  • Ideal for envelope penetrations
  • Split liner for easy installation
  • Easy Installation
  • *Check with your local DuPont technical representative 


    Physical properties

    Method Unit Value
    Australian Building Code Compliance CodeMark - CodeMark CMA-CM40186
    Air Penetration Resistance ASTM E2178 cfm/ft2@1.57psf <.004
    Water Vapor Transmission ASTM E96-05 Method A g/m2-24 hrs 400
    Water Penetration Resistance ATTCC 127 cm 250
    Basis Weight TAPPI T-410 oz/yd2 1.8
    Breaking Strength ASTM D882 lbs/in 30/30
    Tear Resistance (Trapezoid) ASTM D1117 lbs 8/6
    Surface Burning Characteristics ASTM E84 - 15
    Ultra Violet Light Exposure (UV) - Days (months) 120 (4)